Palo Alto Networks firewall applies these five Zero Trust concepts to achieve an integrated approach to prevent threats: User identification helps in recognizing and managing user identities within the network. Vulnerability protection identifies and shields vulnerabilities within the network infrastructure. Antivirus protects against malicious software and viruses. Application identification ensures that applications are properly recognized and managed, thus preventing unauthorized applications. Anti-spyware prevents and removes spyware, ensuring the integrity and security of user data.